Grunge hair is the hairstyle of someone
who is into grunge music (such as Nirvana, Pearl Jam and Soungarden) and is a proper grunger. Their hairstyle will be long and straggly, perhaps covering a large part of their face.
Tarquin: Wow, you're hair
's so messy and cool!
Pablo: Oh, thanks mate.
Tarquin: You must
be a grunger with that grunge hair
Pablo: Yeh, I'm so into grunge. Might as well have the grunge hair
Tarquin: Let's go and make fun of some